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RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

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Cascading Conferences<br />

4<br />

Cascading enables administrators to connect one conference directly to one or several<br />

conferences, depending on the topology, creating one large conference. The conferences can<br />

run on the same MCU or different MCUs.<br />

There are many reasons for cascading conferences, the most common are:<br />

• Connecting two conferences on different MCUs at different sites.<br />

• Utilizing the connection abilities of different MCUs, for example, different<br />

communication protocols, such as, serial connections, ISDN, etc....<br />

The following cascading topologies are available for cascading:<br />

• Basic Cascading - only two conferences are connected (usually running on two<br />

different <strong>RMX</strong>s). The cascaded MCUs reside on the same network.<br />

• Star Cascading - one or several conferences are connected to one master conference.<br />

Conferences are usually running on separate MCUs. The cascaded MCUs reside on the<br />

same network.<br />

• MIH (Multi-Hierarchy) Cascading - several conferences are connected to each other in<br />

Master-Slave relationship. The cascaded MCUs can reside on different networks.<br />

System configuration and feature availability change according to the selected cascading<br />

topology.<br />

Video Layout in Cascading conferences<br />

Cascade links are treated as endpoints in CP conferences and are allocated resources<br />

according to "Default Minimum Threshold Line Rates and Resource Usage Summary” on<br />

page 2-11. Cascaded links in 1x1 video layout are in SD resolution.<br />

When cascading two conferences, the video layout displayed in the cascaded conference is<br />

determined by the selected layout in each of the two conferences. Each of the two<br />

conferences will inherit the video layout of the other conference in one of their windows.<br />

In order to avoid cluttering in the cascaded window, it is advised to select appropriate video<br />

layouts in each conference before cascading them.<br />

Without<br />

Cascade<br />

Conference A Conference B<br />

<strong>Polycom</strong>, Inc. 4-1

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